General bacterial porin family. General bacterial porins are a family of proteins from the outer membranes of Gram-negative bacteria. The porins act as molecular filters for hydrophilic compounds.[1] They are responsible for the 'molecular sieve' properties of the outer membrane.
About the CFR. The Code of Federal Regulations (CFR) is an annual codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.
CFR's Task Force Report on U.S. immigration policy offers a strategy for maintaining U.S. political and economic leadership by attracting skilled immigrants, a program of legalization for those living in the United States illegally, and steps for securing the country's borders in an effective and humane way.